Charging fees on contract phone

My mom booked in her Samsung due to overheating problems at the mtn store in parow centre upper level. <br> <br> They booked her phone in for repairs and said they dont need contract and papers. <br> <br> Today we got an sms saying she should pay R 941.22 for repairs + R 330.00 Service charge.<br> <br> I called the service centre who claims the store booked the phone in as a private repair hence the cost, <br> <br> The lady at the call centre was so rude and short and not of a concerning nature. I still left the call with so many questions.<br> <br> I tried calling the MTn store and they never answer.<br> <br> This is the second Samsung core she received from Mtn with the same problem. She asked them to change the Phone to a different model within her first 7days as she seem to be having a problem with the cores overheating. <br> They refused and gave another core and now we have the same problem. <br> <br> The service we are receiving is disgusting and blame being shifted from one to the other. No solutions and constant attitude. <br> <br> Now we have to foot a bill that's almost the total value of the phone. <br> <br> Please cancel her contract and take back your phone!<br> <br> <br>